The disclosed embodiments include a handheld device including communications circuitry operable to process communications signals, antenna elements electrically coupled to the communications circuitry and operable to wirelessly communicate radio signals capable of being processed by the communications circuitry, and a touch-sensitive display screen including conductive elements having dual functionality to sense touch inputs and operate as the plurality of antenna elements to wirelessly communicate radio signals capable of being processed by the communications circuitry.

The disclosed embodiments include a handheld device including communications circuitry operable to process communications signals, antenna elements electrically coupled to the communications circuitry and operable to wirelessly communicate radio signals capable of being processed by the communications circuitry, and a touch-sensitive display screen including conductive elements having dual functionality to sense touch inputs and operate as the plurality of antenna elements to wirelessly communicate radio signals capable of being processed by the communications circuitry.

An antenna device includes a first antenna unit, a second antenna unit and a third antenna unit. An angle between the second antenna unit and the first antenna unit is substantially equal to 90 degrees. An angle between the third antenna unit and the first antenna unit is substantially equal to 90 degrees. The first antenna unit and the second antenna unit are configured to generate a signal having a first polarization when the third antenna unit is turned off. The third antenna unit and the second antenna unit are configured to generate a signal having a second polarization different from the first polarization when the third antenna unit is turned off. A method of generating polarized signals is also disclosed herein.

An antenna device includes a first antenna unit, a second antenna unit and a third antenna unit. An angle between the second antenna unit and the first antenna unit is substantially equal to 90 degrees. An angle between the third antenna unit and the first antenna unit is substantially equal to 90 degrees. The first antenna unit and the second antenna unit are configured to generate a signal having a first polarization when the third antenna unit is turned off. The third antenna unit and the second antenna unit are configured to generate a signal having a second polarization different from the first polarization when the third antenna unit is turned off. A method of generating polarized signals is also disclosed herein.

In an antenna design, a metal frame of an electronic device and a printed circuit board (PCB) form a slot antenna radiator, where two common mode (CM) slot antenna modes of the slot antenna radiator are excited through anti-symmetrical feeding, so that when dual resonances and wideband coverage are implemented, specific absorption ratio (SAR) values in the two CM slot antenna modes are close.

In an antenna design, a metal frame of an electronic device and a printed circuit board (PCB) form a slot antenna radiator, where two common mode (CM) slot antenna modes of the slot antenna radiator are excited through anti-symmetrical feeding, so that when dual resonances and wideband coverage are implemented, specific absorption ratio (SAR) values in the two CM slot antenna modes are close.

An antenna assembly includes a conductive frame defining at least one slot and divided into at least a first conductive branch and a second conductive branch independently by the slot, a feed point being arranged on the first conductive branch; a resonant circuit, a signal source being coupled to and feeding a current signal to the first conductive branch through the resonant circuit and the feed point, the current signal being coupled to the second conductive branch through the slot, and multiple resonant frequencies being generated on the first and the second conductive branches through the resonant circuit; and a switching circuit configured between perform a switching adjustment for the current signal coupled to the second conductive branch such that radio frequency signals including multiple operating frequency bands are radiated simultaneously on the first conductive branch and the second conductive branch; at least two operating frequency bands being switchable.

An antenna assembly includes a conductive frame defining at least one slot and divided into at least a first conductive branch and a second conductive branch independently by the slot, a feed point being arranged on the first conductive branch; a resonant circuit, a signal source being coupled to and feeding a current signal to the first conductive branch through the resonant circuit and the feed point, the current signal being coupled to the second conductive branch through the slot, and multiple resonant frequencies being generated on the first and the second conductive branches through the resonant circuit; and a switching circuit configured between perform a switching adjustment for the current signal coupled to the second conductive branch such that radio frequency signals including multiple operating frequency bands are radiated simultaneously on the first conductive branch and the second conductive branch; at least two operating frequency bands being switchable.

A transformer of the symmetric-asymmetric type includes comprising a primary inductive circuit and a secondary inductive circuit formed in a same plane by respective interleaved and stacked metal tracks. A first crossing region includes a pair of connection plates facing one another, with each connection plate having a rectangular shape that is wider than the metal tracks, and diagonally connected to tracks of the secondary inductive circuit.

A transformer of the symmetric-asymmetric type includes comprising a primary inductive circuit and a secondary inductive circuit formed in a same plane by respective interleaved and stacked metal tracks. A first crossing region includes a pair of connection plates facing one another, with each connection plate having a rectangular shape that is wider than the metal tracks, and diagonally connected to tracks of the secondary inductive circuit.